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dexar [7]
4 years ago
8

I NEED HELP PLEASE! :)

Mathematics
2 answers:
slega [8]4 years ago
7 0
<h3>Answer: 405 cubic cm</h3>

==================================================

Work Shown:

The base is a square with side length 9, so the area of the base is 9^2 = 9*9 = 81 square cm.

V = \text{volume of square pyramid}\\\\V = \frac{1}{3}*(\text{area of base})*\text{height}\\\\V = \frac{1}{3}*(81)*15\\\\V = 405\\\\

Units for the volume are in cubic cm.

telo118 [61]4 years ago
4 0
V=405cm3
V=a^2h/3=9^2•15/3=405cm3
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A pyramid has a square base with sides 100 feet long. The original height was 75 feet.
viva [34]

Step-by-step explanation:

<u>Step 1:  Find the volume of the original pyramid</u>

<u />V = a^2*\frac{h}{3}

V=(100)^2*\frac{75}{3}

V=10000*25

V=250000

<u>Step 2:  Find the volume of the cut off</u>

<u />V=(20)^2*\frac{15}{3}

V = 400*5

V=2000

<u>Step 3:  Find the percent that still remains</u>

<u />250000-2000

248000

248000 / 250000

0.992*100

99.2

Answer:  99.2%

8 0
4 years ago
Read 2 more answers
CAN YOU ANSWE QUESTION 1 and 2 please??
Svetllana [295]

Answer:

B. $700

Step-by-step explanation:

The answer is A because.....

Step 1: Find the 7% of 2000.

a.) 7% of 2000 is 140.

b.) Check- So: 140/2000= 0.07 (7%)

Step 2: Multiply 140x5 which equals $700.

Although, I can’t really see the second question‘s options, as the calculations made for the previous question, she paid $140 each year.

I rlly hope this is helpful! If so, please, please, please mark brainliest! Thanks! :)

5 0
3 years ago
3
Svetllana [295]

Answer:

The formula to find the value of the side is X ^ 3 = 10, and the side measures 2.15 cm.

Step-by-step explanation:

Given that a Rubik's Cube has a volume of 10 cm, to write an equation to find the length of the sides and find the length of the side to the nearest tenth, the following calculations must be performed, knowing that the volume of a cube is obtained to enhance one of its sides to the third:

X ^ 3 = 10

X = 3√ 10

X = 2.15

Thus, the formula to find the value of the side is X ^ 3 = 10, and the side measures 2.15 cm.

4 0
3 years ago
Josh constructs a banner in the shape of a parallelogram by making a copy of a trapezoid.
CaHeK987 [17]

Answer:

A. 8 square feet

Step-by-step explanation:

(5 + 3)/2 x 2 = 8

4 0
3 years ago
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TEA [102]

Step-by-step explanation:

sum=addition

3/10 +1/3

find the LCM of 10 and 3 Which is 30

9+10/30=19/30

I hope it helps ☺️

5 0
3 years ago
Read 2 more answers
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